Hugo Flávio

@hugoflavio.com

1841 Followers 1192 Following

Research associate at Dalhousie University. Aquatic animal #movement and #physiology. Developer of the #Rstats package actel for #acousticTelemetry. Having fun building respirometers :) hugoflavio.com

schematic showing the process of creating gummies in the form of fish, which can then be used to determine the preferences of predators. This includes adding nutritional supplements and or dying the gummy with various colours.
A screenshot showing a loading circle on a black background (it should have been an image, but it will just keep trying to load forever). The alt text of the image, however, shows up proudly under the floating white circle, carrying the message that the image failed to pass along. Thank you for using alt text!
a 3D-model of a stylus holder built in FreeCAD
A line plot of two variables progressing over time. The plot looks clean and professional, with a minimal theme.
photo of a juvenile sea lamprey attached to the inside of a transparent respirometry chamber. The lamprey is upside down, looking at the camera, and you can see the inside of its oral disk. A very cool lamprey :)
Bad drawing of a person pulling their glasses down with an expression of disappointed astonishment (the "mother of god" meme)
A 4-channel flush pump controller being tested. The lights for each pump turn on one second apart, and turn back off one second apart again, confirming the wiring inside the controller is behaving as expected.
At the edge of a snowy path, a cat stands on its two hind legs and looks over a mound of snow, wondering what is going on over there. It is a well known meme :)
A wooden tabletop with a white breadboard in the middle of the image (used to make simple wire connections between devices), two arduino nanos to the left, and one arduino uno to the right. The arduino uno controls the other two. The three boards have USB cables coming out of them, as all three are connected to a laptop for testing. In the final version, only the Uno will need to be connected to the computer.
A large freshwater mussel with the syphons facing the camera. The mussel is half-buried in sand, after choosing a good resting place.
Figure 3. Surgical operations on small aquatic organisms using a scalpel and sutures present specific challenges for surgeons. (A) Small scalpel blades allow for better precision when opening the incision. (B) Larger scalpel blades increase the chance of accidentally injuring the internal organs of the organism. (C) Using a rounded tool (e.g., tweezers) to move the tag away from the incision and create an open space for the needle to pass will prevent injury to internal organs. (D) If care is not taken, the needle will puncture the internal organs, sewing them to the body wall.
A presentation slide on "Future Research", where the last bullet point asks "Will the GLFC (Great Lakes Fisheries Commission) survive Trump 2.0?"
A form field requesting a link to X, where I put a link to my bluesky profile.
Screenshot from X saying "Your account is deactivated"
A screenshot of a few slack messages by the homemade "Cricket" app. The messages read that one of the scripts has errored, showing the (admittedly not incredibly helpful) R message associated with the error. The second line shows the last checkpoint the bot had passed before crashing. It goes on to say it will try to recover, and recovers successfully.
A phone notification alert from a custom-made app called Mushu. The notification only reads "The fish are dying! You monster!" and makes the phone ring to call my attention. No further details on what is actually happening are given 😅
A top view of an aquatic respirometry system composed of two baths containing four chambers each. The four chambers on the left are smaller than the ones on the right. These chambers are used to measure oxygen consumption in fish. There are a lot of wires and cables going around, in good crazy-scientist experiment fashion :)
A too-long line of R code containing back-to-back sets of square-brackets. Below it, there is a comment that says: "That's some unholy sequential bracketing but I don't recall why I did it so I am letting it stay" and a smiley face.
Three respirometry caps fitted with O-rings and baffle plates. Only missing the tube connectors at the back.
A workbench with scattered tools and respirometry chamber caps at various stages of completion
Three juvenile lake sturgeon chilling in a kiddie pool
I start by selecting two of the four pumps this controller can control, and set them to start cycling. The two pumps start displaying M1 and a countdown timer. Then I enter the reset menu to show, first, what happens if we select "No" (the controller just goes back to what it was doing), and if we select "Yes" (all pumps go back to permanent flush on phase F0).
A conceptual drawing of the message that should be displayed before triggering a reset. it reads "Resetting will make cycles return to F0. Proceed with reset?" And then the options "No" and "Yes" show up below.
A trace plot of code contributions to the R package actel (y axis) over the course of one year (x axis). From January to the end of September, only small, occasional bumps in contributions appear. At the start of October, there is a big spike in contributions, with more moderate influxes continuing in the weeks that follow.
four respirometry chambers lined up on a table, with one of the caps open to dry. The chambers were built in-house.
The e-ink tablet showing the play store homepage
The cover of my e-ink tablet, featuring a cute neuron sticker.
A custom-made temperature controller. The box used here is the same model as the one in the post above, except this version has a transparent cover, so the components inside are visible. The controller is precariously sitting in a platform balanced between two large water tanks (no disasters happened, though lol).
The Thanos "But sire" meme, modified so Thanos demands that the box be closed, even if the cables are a mess inside.
an acrylic respirometer cap that is drying while sitting inside a wooden assembly meant to keep the parts securely in place.
The logo of Dalhousie University
A vertical line starting at 80°C, going down to 0°C, and then back swerving back upwards in an arc towards -80°C. The word "High" is placed next to both 80 and -80°C, and the word "Low" is placed next to the 0, denoting a tendency to describe negative values closer to 0 as "low" and negative values closer to -80 as "high."
A paper title reading: "Movements of dead fish in rivers"
A shiny wooper pokemon wearing a beanie.